Try this in the bathtub or when youre washing dishes: Lower a drinking glass, mouth downward, over

Question:

Try this in the bathtub or when you€™re washing dishes: Lower a drinking glass, mouth downward, over a small floating object such as a Ping-Pong ball. What do you observe? How deep must the glass be pushed in order to compress the enclosed air to half its volume? (You won€™t be able to do this in your bathtub unless it€™s 10.3 m deep!)

Try this in the bathtub or when you’re washing dishes: